Roof Ballast Rocks

Roofing ballast is usually the little pebbles you see on a flat ish roof.

Roof ballast rocks.

When the concept first came to the u s plenty of roofers scratched their heads and wondered how the roof stayed on without being anchored especially during high winds or storms. Admittedly one that i have not seen but i haven t been in the desert since i was a kid. 2 roofing ballast no longer meets spec astm d 448. Naturally round grey and tan granite.

Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer. Used in roofing applications. The single ply membrane and other roof components including thermal insulation are loose laid. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material.

Please visit us to view actual products before placing an order. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed. Holes mean roof leaks and roof leaks mean call the roofer.

The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg m 2. Additional benefits of ballast on a flat roof. It is very important to note that the amount of gravel being applied to a roof must be precise it depends on the specific roofing spec being used and the building type. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.

Landscaping decorative drainage septic systems roof ballast. 4 blue round gravel approx. The ballast also helps protect the roofing membrane from damage such as from hail tree branches and ultraviolet light. The difficulty with a ballasted roof is the issue of water pooling.

You can still find houses here in the city with rock roofs. Despite the positive qualities associated with a ballasted roof system there are some challenges. Ton or 60lbs bags 3 roofing ballast astm d 448. March 11th 2010 at 2 41 pm.

This appears to be a form of roof ballast. A ballasted roof is a roof with something such as rocks or concrete pavers to hold the roofing membrane such as epdm down. Ballasted flat roofs are a popular choice especially for commercial buildings. Personally i dislike them.

3 4 1 1 2 excavated from our pond with a natural blue tint mixed with brown and natural color hues. It is however ballasted generally with gravel. The gravel in a ballasted roof helps absorb heat preventing the sun from heating the roof materials below and making the roof more energy efficient. Too much gravel can result in a structural issue due to weight.